Improved rolling-mill



NJETERS. FHOTO-UTHOGRIPHER, WASHINGTON. D CA tutti @filtre JAMES MONTGOMERY, OF NEW YORK, N. Y.

Letters Patent No. 99,221, dated January 25, 1870.

IMPROVED ROLLING-MILL.

The Schedule refened to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that 1, J AMES MONTGOMERY, of New York, have invented certain new and useful Iluprovements in Machinery for Rolling Metals; and I do hereby declare the following to be afull, clear, and exact description of the same, reference being had to the accompanying drawings, which form part of this specification. Y

Figure 1 is a plan or top view, partly in section, of the two-ends of a rolling-mill, illustrating part-s of my invention.

Figure 2 is a longitudinal section of a portion of the said mill, representing my improved ily-wheel land driving-gear, and their accessories.

Figure 3 is an end elevation of the same.

Figure 4 is a transverse sectional elevation, on a larger scale, ofthe driving-pulleys and the beltftightening apparatus, hereinafter described.

Figure 5 represents a longitudinal section of the same.

Figure 6 is a transverse sectional view ofthe rolls, representing the hollowr dies, hereinafter described, which are employed for cutting and forming spikes, and other' articles of irregular form Figure 7 is a longitudinal view, representing a portion of one ofthe pair of rolls in elevation, and a portion of the other in section.

Figures 8 and 9 are, respectively, aftransvers'e and a longitudinal sectional view of the adjacent partsof a pair of rolls, furnished with grooves and dies for forming my improved double spikes, for railway purposes. lhese spikes will be made the subject of a separate application for Letters Patent. Their form is shown in red.

Fig. 8 represents a transverseisection of parts of a pair of rolls, illustrating the application of my invention to the manufacture of double spikes for railways.

Fig. 9 represents a longitudinal section of the same.

My mill is provided at each end with a driving-eugine, A A', and a ily-wheel, B B, of very large size, and peculiarconstruction, mounted on a large hollow shaft, B1, open at both ends, and provided on the inside witlh spiral or oblique flanges or wings, b, which, as the shaft rotates, force a constant current of air through it, to assist in keeping the journals cool.

From the ily-wheel shaft B1, rotation is communicated to the rolls C C, through the medium of pulleys 1) D', the former being fixed to the ily-wheel shaft B', and the pulley D to one of the rolls C. Q

The rolls C C are geared together by pinions c, in customary manner.

At each end of the mill, a ch'iving-belt, E, passes loosely around the pulleys DD', so that it will not communicate motion from one to the other, unless drawn tight.

The tightening of the belt for this purpose is effected by a steam-apparatus, represented more clearly in rigs. 4 and 5, the same consisting of a double steamcylinder, F, in each end of which is a piston, G.

Each of the pistons G is attached to a separate rod, g g, which works in a guide, g2, and carries a pair of anti-friction rollers, g1 g, between which the belt runs freely.

To tighten the belt, and thus communicate motion from the pulleyD to the pulleyr D', steam is introduced simultaneously at the two ends of the cylinder, so as to drive the pistons toward each other, and thus draw the two'parts of the belt toward the centre.

In operation, the two engines A and A may be kept constantly running in opposite directions, so that one of them may be employed to run the rolls. one way, and the other to run them in the reverse direction, the connection Aand disconnection of the respective engines with the rolls being governed by means of rods g, which operate suitable valves, so as to admit steam to the cylinders, or permit its escape therefrom. Each driving-engine, with is fly-wheel, may thus be permitted to acquire momentum, while the other is at work,\or,

if preferred, the two may at any time be run inthe same direction, so as to act simultaneously on the rolls l when unusual power is required.

A single instead of a duplex cylinder may be eniployed to tighten the belt, said cylinder being on the, front side of the belt, and connecting, by a rod, to the tightening-pulley at back.

The shaft B1 of my improved ily-wheel, being made hollow, and of-very large diameter, forms a shell of great strength, without increasing the weight of metal.

By reason of the great size of the shaft, it is ena# bled to sustain a centre or socket-flange, B2, of very large circumference, which receives the wooden arms or spokes I and aords ample means for securing their ends, and for the attachment of the wrought-metal rods J, by which the wheel is tied together, as will presently he explained.

I prefer to form the rim H of the wheel, of segments, h, bolted or riveted together' by their anges h,'and with sockets h2 cast upon them for the reception of wooden or other elastic arms I. Lhe said arms are made as wide, longitudinally, as'the width of the rim will readily admit, and correspondingly narrow transversely. 4

The outer ends of the tie-rods J are secured by the same bolts or rivets which attach the segments of the rim together, and their inner ends are secured to the hub by screw-bolts, rivets, or draw-keys.

In wheels where a very high velocity is required, the hub may be elongated to any necessary extent, and lugs cast upon it, so as to spread the fastenings of the rods toward the alternate ends of the shaft, thus constituting Abraces.

` The centres of the rods are provided with turnbuckles j, working on right and lett screws, in customary manner, for the purpose of tightening the rods.

The ends of the arms are secured, in their sockets, by keys or bolts t i.

The rolls G C* are both made hollowfand may be fitted with heads, (through centralapertures, in which may pass stationary pipes,) one at each end, to introduce and carry oii water, the fiow of which will keep the rolls constantly cool While in use.

In the illustration shown in iig. 7, the collars C3 themselves serve to retain a sufcient body of water within the rolls, and in contact with the dies.

At suitable intervals Vin the. circumferential grooves of the rolls, I fit cutting or forming-dies L M, of suitable shape, to point and head spikes, and to sever the formed spikes from the rod.

In practice, I propose to form on each roll a number of grooves, of different capacity, in order to produce spikes of assorted sizes.

I make the dies removable, by setting them in radial sockets in the rolls, and supporting them by screws N, tapped into the rolls from th'e interior, and secured by jam-nuts O.

The entire dies are made hollow, and suitable ports or'passages I) formed in them to communicate with ports ca in the internal collars oranges O,`in which the dies are set, as shown in fig. 6, so that water `will ow through the dies at every revolution, and thus keep them cool The dies may be readily taken out of the rolls to he reshaped and repaired, and their adjustability, by4

means of the set-screws N, adapts them to be set up .to the necessary prominence and projection as they For the purpose of illustration, I have described my y rolling-mill asv applied to the manufacture of spikes, but the same invention 'is manifestly applicable to many other purposes.

What I claim herein as of my invention, and desire to secure by Letters Patent, is

1. The removable hollow dies L M, inserted into and secured and made adjustable in their seats in the rolls, substantially as set forth.

2. The pulleys, belts, and steam-tighteners, arranged and employed for starting, stopping, and reversing the rolls, substantially in the manner described.

' 3. The hollow shaft B', provided with internal wings or anges, to produce currents of air to assist in keeping the journals cool.

4. The iiy-wheels, constructed with wooden or other elastic arms, segmental rims, and tie-rods, substantially as described.

JAMES MONTGOMERY. Witnesses:

WM. H. BRnnE'roN, JR., W. B. DEMING. 

